\hline \hline
                    &\multicolumn{4}{c}{OLS}                                                                &\multicolumn{4}{c}{IV}                                                                 \\\cmidrule(lr){2-5}\cmidrule(lr){6-9}
                    &\multicolumn{1}{c}{Stacked}&\multicolumn{1}{c}{Aug '20}&\multicolumn{1}{c}{Feb '21}&\multicolumn{1}{c}{Aug '21}&\multicolumn{1}{c}{Stacked}&\multicolumn{1}{c}{Aug '20}&\multicolumn{1}{c}{Feb '21}&\multicolumn{1}{c}{Aug '21}\\
& (1) & (2) & (3) & (4) & (5) & (6) & (7) & (8) \\
\hline
Win in Batch        &       0.055\sym{***}&       0.086\sym{***}&       0.073\sym{***}&       0.051\sym{***}&                     &                     &                     &                     \\
                    &     (0.004)         &     (0.017)         &     (0.010)         &     (0.004)         &                     &                     &                     &                     \\
[1em]
Ever Win            &                     &                     &                     &                     &       0.088\sym{***}&       0.090\sym{***}&       0.101\sym{***}&       0.085\sym{***}\\
                    &                     &                     &                     &                     &     (0.006)         &     (0.018)         &     (0.014)         &     (0.006)         \\
\\ 
Observations        &     156,812         &       6,640         &      18,300         &     131,872         &     156,812         &       6,640         &      18,300         &     131,872         \\
Mean (Control)      &       0.237         &       0.329         &       0.328         &       0.221         &       0.205         &       0.327         &       0.302         &       0.183         \\
Batches & 2-14, 16-17 & 2-3 & 2-11 & 2-14, 16-17 & 2-14, 16-17 & 2-3 & 2-11 & 2-14, 16-17 \\
\hline
